按钮启动运行循环时如何单击按钮停止 [英] How to click button stop when button start is running loop
问题描述
我有启动和停止的程序
启动按钮而不是循环运行：
-first循环更改代理然后打开浏览器。
$ b在第一次迭代中打开的镀铬浏览器中的$ b -second循环打开URL。
停止按钮：
我希望它停止循环并重置。
我无法在启动按钮运行时按停止按钮。
我尝试过：
我尝试过背景
1-
http://stackoverflow.com/questions/3065700/how-to-start-and-stop-a-continuously-running-background-worker-using-a-button < br $> b $ b
我可以按停止但我看不到镀铬浏览器
2-
http://stackoverflow.com/questions/27580241/breaking-from-a-loop-with-button-click-c-sharp
我但我的代码而不是
Console.WriteLine（Hello，world）;
当我调试代码时我自己它不会运行代码
_worker.DoWork + = new DoWorkEventHandler（（state，args）=>
{}）;
并选择黄色。
I have program that have start and stop
start button that is run instead loop:
-first loop change proxy then open browser .
-second loop open urls in chrome browser that opened in first iteration.
stop button:
I want it stop loop and reset .
I can't press in stop button while start button is running.
What I have tried:
I tried background
1-
http://stackoverflow.com/questions/3065700/how-to-start-and-stop-a-continuously-running-background-worker-using-a-button
I can press stop but i can't see chrome browser
2-
http://stackoverflow.com/questions/27580241/breaking-from-a-loop-with-button-click-c-sharp
I but my code instead of
Console.WriteLine("Hello, world");
when i debug code i see it does't run code in
_worker.DoWork += new DoWorkEventHandler((state, args) =>
{ });
and select it with yellow color.
推荐答案
听起来你可以使用线程安全取消的异步操作的一些信息。
看看这里[线程安全操作]
需要通过查看已取消的旗帜来取消您的其他流程。
或者：如果你真的想使用后台工作人员，您可以让按钮设置一个标志，并在事件期间从后台工作人员报告进度，检查该标志，然后在该呼叫中安全取消。
Sounds like you could use some info on Asynchronous operations with thread safe cancellations.
Take a look here [Thread Safe Operations]
Need to allow the cancelling of your other process by checking the cancelled flag.
OR: if you really want to use the background worker, you can have the button set a flag and during the event to report progress from the background worker check the flag and then safe cancel within that call.
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